Home Postcodes by state VIC 3023 Postcode 3023 3023 is the postcode for 7 localities in VIC: Burnside, Burnside Heights, Cairnlea, Caroline Springs, Deer Park, Deer Park North and 1 more. Localities with postcode 3023BurnsideVICBurnside HeightsVICCairnleaVICCaroline SpringsVICDeer ParkVICDeer Park NorthVICRavenhallVIC Postcode 3023 State or territory Victoria (VIC) Localities 7 Council area Melton; Brimbank Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 3022 · Postcode 3024